/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:19:32,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:19:32,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:19:32,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:19:32,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:19:32,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:19:32,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:19:32,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:19:32,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:19:32,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:19:32,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:19:32,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:19:32,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:19:32,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:19:32,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:19:32,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:19:32,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:19:32,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:19:32,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:19:32,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:19:32,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:19:32,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:19:32,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:19:32,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:19:32,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:19:32,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:19:32,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:19:32,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:19:32,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:19:32,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:19:32,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:19:32,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:19:32,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:19:32,378 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:19:32,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:19:32,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:19:32,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:19:32,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:19:32,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:19:32,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:19:32,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:19:32,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:19:32,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:19:32,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:19:32,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:19:32,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:19:32,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:19:32,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:19:32,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:19:32,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:19:32,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:19:32,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:19:32,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:19:32,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:19:32,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:19:32,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:19:32,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:19:32,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:19:32,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:19:32,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:19:32,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:19:32,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:19:32,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:19:32,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:19:32,842 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-04 13:19:32,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/991075103/48400a1b14db45d6b88d196c06eef9ce/FLAG625696da6 [2020-09-04 13:19:33,533 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:19:33,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-04 13:19:33,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/991075103/48400a1b14db45d6b88d196c06eef9ce/FLAG625696da6 [2020-09-04 13:19:33,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/991075103/48400a1b14db45d6b88d196c06eef9ce [2020-09-04 13:19:33,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:19:33,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:19:33,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:19:33,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:19:33,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:19:33,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:19:33" (1/1) ... [2020-09-04 13:19:33,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5c9d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:33, skipping insertion in model container [2020-09-04 13:19:33,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:19:33" (1/1) ... [2020-09-04 13:19:33,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:19:33,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:19:34,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:19:34,203 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:19:34,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:19:34,236 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:19:34,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34 WrapperNode [2020-09-04 13:19:34,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:19:34,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:19:34,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:19:34,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:19:34,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... [2020-09-04 13:19:34,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... [2020-09-04 13:19:34,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... [2020-09-04 13:19:34,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... [2020-09-04 13:19:34,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... [2020-09-04 13:19:34,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... [2020-09-04 13:19:34,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... [2020-09-04 13:19:34,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:19:34,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:19:34,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:19:34,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:19:34,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:19:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:19:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:19:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-04 13:19:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-04 13:19:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:19:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:19:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:19:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-04 13:19:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-04 13:19:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:19:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:19:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:19:34,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:19:34,682 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:19:34,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:19:34 BoogieIcfgContainer [2020-09-04 13:19:34,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:19:34,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:19:34,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:19:34,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:19:34,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:19:33" (1/3) ... [2020-09-04 13:19:34,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313763d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:19:34, skipping insertion in model container [2020-09-04 13:19:34,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:19:34" (2/3) ... [2020-09-04 13:19:34,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313763d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:19:34, skipping insertion in model container [2020-09-04 13:19:34,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:19:34" (3/3) ... [2020-09-04 13:19:34,699 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-04 13:19:34,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:19:34,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:19:34,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:19:34,796 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:19:34,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:19:34,796 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:19:34,797 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:19:34,797 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:19:34,797 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:19:34,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:19:34,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:19:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-04 13:19:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:19:34,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:34,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:34,836 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-09-04 13:19:34,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:34,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159896037] [2020-09-04 13:19:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:19:35,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159896037] [2020-09-04 13:19:35,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:19:35,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:19:35,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940444057] [2020-09-04 13:19:35,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:19:35,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:35,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:19:35,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:19:35,141 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-04 13:19:35,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:35,265 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-09-04 13:19:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:19:35,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-04 13:19:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:35,282 INFO L225 Difference]: With dead ends: 44 [2020-09-04 13:19:35,283 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 13:19:35,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:19:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 13:19:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-04 13:19:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:19:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-04 13:19:35,350 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-09-04 13:19:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:35,350 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-04 13:19:35,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:19:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-04 13:19:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:19:35,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:35,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:35,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:19:35,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:35,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-09-04 13:19:35,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:35,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158635] [2020-09-04 13:19:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:19:35,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158635] [2020-09-04 13:19:35,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:19:35,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:19:35,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479055657] [2020-09-04 13:19:35,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:19:35,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:19:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:19:35,435 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-09-04 13:19:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:35,505 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-09-04 13:19:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:19:35,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-04 13:19:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:35,508 INFO L225 Difference]: With dead ends: 36 [2020-09-04 13:19:35,508 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:19:35,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:19:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:19:35,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-04 13:19:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:19:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-04 13:19:35,519 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-09-04 13:19:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:35,520 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-04 13:19:35,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:19:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-04 13:19:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 13:19:35,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:35,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:35,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:19:35,523 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:35,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-09-04 13:19:35,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:35,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921616621] [2020-09-04 13:19:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:19:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:19:35,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921616621] [2020-09-04 13:19:35,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056142217] [2020-09-04 13:19:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:35,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:19:35,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:19:35,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:35,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-09-04 13:19:35,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591891061] [2020-09-04 13:19:35,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 13:19:35,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:35,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 13:19:35,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:19:35,918 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 10 states. [2020-09-04 13:19:36,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:36,168 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-04 13:19:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:19:36,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-09-04 13:19:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:36,171 INFO L225 Difference]: With dead ends: 58 [2020-09-04 13:19:36,171 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 13:19:36,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:19:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 13:19:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-04 13:19:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 13:19:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-09-04 13:19:36,182 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-09-04 13:19:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:36,183 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-09-04 13:19:36,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 13:19:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-09-04 13:19:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:19:36,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:36,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:36,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:19:36,399 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-09-04 13:19:36,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:36,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999872925] [2020-09-04 13:19:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:19:36,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999872925] [2020-09-04 13:19:36,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457155798] [2020-09-04 13:19:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:36,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:19:36,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:19:36,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:36,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-04 13:19:36,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911732989] [2020-09-04 13:19:36,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:19:36,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:19:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:19:36,654 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-09-04 13:19:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:36,836 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-09-04 13:19:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:19:36,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-04 13:19:36,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:36,841 INFO L225 Difference]: With dead ends: 54 [2020-09-04 13:19:36,841 INFO L226 Difference]: Without dead ends: 50 [2020-09-04 13:19:36,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:19:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-04 13:19:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-04 13:19:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 13:19:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-09-04 13:19:36,855 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-09-04 13:19:36,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:36,856 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-09-04 13:19:36,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:19:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-09-04 13:19:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-04 13:19:36,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:36,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:37,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:37,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:37,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:37,075 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-09-04 13:19:37,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:37,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110957502] [2020-09-04 13:19:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:37,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:19:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:37,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 13:19:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:19:37,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110957502] [2020-09-04 13:19:37,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93818420] [2020-09-04 13:19:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-09-04 13:19:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:37,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-04 13:19:37,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-04 13:19:37,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:37,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2020-09-04 13:19:37,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026188577] [2020-09-04 13:19:37,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 13:19:37,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:37,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 13:19:37,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:19:37,380 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 11 states. [2020-09-04 13:19:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:37,745 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2020-09-04 13:19:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 13:19:37,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-04 13:19:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:37,748 INFO L225 Difference]: With dead ends: 108 [2020-09-04 13:19:37,749 INFO L226 Difference]: Without dead ends: 66 [2020-09-04 13:19:37,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:19:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-04 13:19:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-04 13:19:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 13:19:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2020-09-04 13:19:37,771 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2020-09-04 13:19:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:37,771 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2020-09-04 13:19:37,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 13:19:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2020-09-04 13:19:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 13:19:37,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:37,774 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:37,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:37,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:37,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:37,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-09-04 13:19:37,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:37,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139497065] [2020-09-04 13:19:37,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:38,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 13:19:38,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139497065] [2020-09-04 13:19:38,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528125077] [2020-09-04 13:19:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-09-04 13:19:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:38,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-04 13:19:38,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:19:38,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:38,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-09-04 13:19:38,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361775370] [2020-09-04 13:19:38,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 13:19:38,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:38,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 13:19:38,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-04 13:19:38,371 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand 13 states. [2020-09-04 13:19:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:38,846 INFO L93 Difference]: Finished difference Result 180 states and 324 transitions. [2020-09-04 13:19:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 13:19:38,847 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-09-04 13:19:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:38,854 INFO L225 Difference]: With dead ends: 180 [2020-09-04 13:19:38,854 INFO L226 Difference]: Without dead ends: 120 [2020-09-04 13:19:38,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-09-04 13:19:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-04 13:19:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2020-09-04 13:19:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 13:19:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 169 transitions. [2020-09-04 13:19:38,882 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 169 transitions. Word has length 40 [2020-09-04 13:19:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:38,882 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 169 transitions. [2020-09-04 13:19:38,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 13:19:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 169 transitions. [2020-09-04 13:19:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 13:19:38,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:38,888 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:39,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:39,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:39,104 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-09-04 13:19:39,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:39,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667030163] [2020-09-04 13:19:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:19:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-04 13:19:39,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667030163] [2020-09-04 13:19:39,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316564726] [2020-09-04 13:19:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:19:39,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-04 13:19:39,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:39,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-09-04 13:19:39,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216992073] [2020-09-04 13:19:39,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 13:19:39,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:39,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 13:19:39,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:19:39,430 INFO L87 Difference]: Start difference. First operand 106 states and 169 transitions. Second operand 14 states. [2020-09-04 13:19:40,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:40,001 INFO L93 Difference]: Finished difference Result 258 states and 498 transitions. [2020-09-04 13:19:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 13:19:40,004 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-04 13:19:40,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:40,009 INFO L225 Difference]: With dead ends: 258 [2020-09-04 13:19:40,009 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 13:19:40,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-09-04 13:19:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 13:19:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 112. [2020-09-04 13:19:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-04 13:19:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2020-09-04 13:19:40,067 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2020-09-04 13:19:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:40,068 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2020-09-04 13:19:40,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 13:19:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2020-09-04 13:19:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-04 13:19:40,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:40,082 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:40,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-09-04 13:19:40,283 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:40,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:40,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1504181040, now seen corresponding path program 1 times [2020-09-04 13:19:40,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:40,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841001962] [2020-09-04 13:19:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 13:19:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-04 13:19:40,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841001962] [2020-09-04 13:19:40,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313815865] [2020-09-04 13:19:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:40,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2020-09-04 13:19:40,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-04 13:19:40,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:40,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-09-04 13:19:40,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832707046] [2020-09-04 13:19:40,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 13:19:40,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:40,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 13:19:40,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-09-04 13:19:40,725 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand 16 states. [2020-09-04 13:19:41,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:41,401 INFO L93 Difference]: Finished difference Result 243 states and 465 transitions. [2020-09-04 13:19:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 13:19:41,402 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-09-04 13:19:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:41,404 INFO L225 Difference]: With dead ends: 243 [2020-09-04 13:19:41,404 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 13:19:41,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2020-09-04 13:19:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 13:19:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2020-09-04 13:19:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-04 13:19:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-09-04 13:19:41,420 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 82 [2020-09-04 13:19:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:41,421 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-09-04 13:19:41,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 13:19:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-09-04 13:19:41,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-04 13:19:41,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:41,424 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:41,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:41,639 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:41,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2095197631, now seen corresponding path program 1 times [2020-09-04 13:19:41,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:41,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260059122] [2020-09-04 13:19:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-04 13:19:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-04 13:19:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-09-04 13:19:42,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260059122] [2020-09-04 13:19:42,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695970144] [2020-09-04 13:19:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:42,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:19:42,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 89 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-09-04 13:19:42,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:42,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-09-04 13:19:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413492004] [2020-09-04 13:19:42,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 13:19:42,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:42,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 13:19:42,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:19:42,244 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 15 states. [2020-09-04 13:19:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:42,726 INFO L93 Difference]: Finished difference Result 172 states and 251 transitions. [2020-09-04 13:19:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 13:19:42,727 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 123 [2020-09-04 13:19:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:42,729 INFO L225 Difference]: With dead ends: 172 [2020-09-04 13:19:42,729 INFO L226 Difference]: Without dead ends: 96 [2020-09-04 13:19:42,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-09-04 13:19:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-04 13:19:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-09-04 13:19:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-04 13:19:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2020-09-04 13:19:42,741 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 123 [2020-09-04 13:19:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:42,742 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2020-09-04 13:19:42,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 13:19:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2020-09-04 13:19:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-04 13:19:42,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:42,745 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:42,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:42,950 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:42,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:42,951 INFO L82 PathProgramCache]: Analyzing trace with hash 639237618, now seen corresponding path program 1 times [2020-09-04 13:19:42,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:42,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504718399] [2020-09-04 13:19:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 13:19:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-04 13:19:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:19:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 179 proven. 162 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-09-04 13:19:43,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504718399] [2020-09-04 13:19:43,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652784491] [2020-09-04 13:19:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:43,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:19:43,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 146 proven. 53 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2020-09-04 13:19:43,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:43,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 18 [2020-09-04 13:19:43,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012265259] [2020-09-04 13:19:43,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:19:43,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:43,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:19:43,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:19:43,722 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand 18 states. [2020-09-04 13:19:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:44,529 INFO L93 Difference]: Finished difference Result 195 states and 295 transitions. [2020-09-04 13:19:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 13:19:44,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-09-04 13:19:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:44,533 INFO L225 Difference]: With dead ends: 195 [2020-09-04 13:19:44,534 INFO L226 Difference]: Without dead ends: 113 [2020-09-04 13:19:44,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2020-09-04 13:19:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-04 13:19:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 94. [2020-09-04 13:19:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 13:19:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2020-09-04 13:19:44,546 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 164 [2020-09-04 13:19:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:44,547 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2020-09-04 13:19:44,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:19:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2020-09-04 13:19:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-04 13:19:44,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:44,551 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 14, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:44,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-09-04 13:19:44,765 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1218599998, now seen corresponding path program 2 times [2020-09-04 13:19:44,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:44,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646029287] [2020-09-04 13:19:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:44,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:44,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 13:19:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 13:19:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 13:19:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 104 proven. 358 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2020-09-04 13:19:45,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646029287] [2020-09-04 13:19:45,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043505200] [2020-09-04 13:19:45,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:45,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:19:45,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:19:45,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 12 conjunts are in the unsatisfiable core [2020-09-04 13:19:45,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 97 proven. 261 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-09-04 13:19:45,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:45,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-09-04 13:19:45,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519682664] [2020-09-04 13:19:45,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:19:45,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:45,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:19:45,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:19:45,706 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand 18 states. [2020-09-04 13:19:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:46,394 INFO L93 Difference]: Finished difference Result 219 states and 332 transitions. [2020-09-04 13:19:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 13:19:46,395 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 220 [2020-09-04 13:19:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:46,398 INFO L225 Difference]: With dead ends: 219 [2020-09-04 13:19:46,398 INFO L226 Difference]: Without dead ends: 107 [2020-09-04 13:19:46,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2020-09-04 13:19:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-04 13:19:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2020-09-04 13:19:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-04 13:19:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2020-09-04 13:19:46,417 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 220 [2020-09-04 13:19:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:46,418 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2020-09-04 13:19:46,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:19:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2020-09-04 13:19:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-04 13:19:46,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:46,428 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 17, 14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:46,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:46,644 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:46,644 INFO L82 PathProgramCache]: Analyzing trace with hash 214574526, now seen corresponding path program 3 times [2020-09-04 13:19:46,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:46,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484193052] [2020-09-04 13:19:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:46,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 13:19:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 13:19:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 13:19:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 157 proven. 549 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2020-09-04 13:19:47,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484193052] [2020-09-04 13:19:47,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398777] [2020-09-04 13:19:47,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:47,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-09-04 13:19:47,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:19:47,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:19:47,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 318 proven. 76 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2020-09-04 13:19:47,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:47,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2020-09-04 13:19:47,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932135991] [2020-09-04 13:19:47,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 13:19:47,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:47,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 13:19:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-09-04 13:19:47,811 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand 20 states. [2020-09-04 13:19:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:48,903 INFO L93 Difference]: Finished difference Result 233 states and 314 transitions. [2020-09-04 13:19:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 13:19:48,904 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 272 [2020-09-04 13:19:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:48,906 INFO L225 Difference]: With dead ends: 233 [2020-09-04 13:19:48,906 INFO L226 Difference]: Without dead ends: 131 [2020-09-04 13:19:48,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=1622, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 13:19:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-04 13:19:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-09-04 13:19:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-04 13:19:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2020-09-04 13:19:48,919 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 272 [2020-09-04 13:19:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:48,920 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2020-09-04 13:19:48,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 13:19:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2020-09-04 13:19:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 13:19:48,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:48,923 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:49,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:49,137 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 4 times [2020-09-04 13:19:49,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:49,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271827423] [2020-09-04 13:19:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 13:19:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-04 13:19:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-09-04 13:19:50,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271827423] [2020-09-04 13:19:50,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56166989] [2020-09-04 13:19:50,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:50,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-04 13:19:50,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:19:50,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 103 conjunts are in the unsatisfiable core [2020-09-04 13:19:50,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-09-04 13:19:51,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:51,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-09-04 13:19:51,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38428517] [2020-09-04 13:19:51,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-04 13:19:51,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:51,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-04 13:19:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 13:19:51,407 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand 36 states. [2020-09-04 13:19:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:51,869 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-09-04 13:19:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 13:19:51,870 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 177 [2020-09-04 13:19:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:51,872 INFO L225 Difference]: With dead ends: 126 [2020-09-04 13:19:51,872 INFO L226 Difference]: Without dead ends: 108 [2020-09-04 13:19:51,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 234 SyntacticMatches, 13 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 13:19:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-04 13:19:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-04 13:19:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-04 13:19:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2020-09-04 13:19:51,881 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 177 [2020-09-04 13:19:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:51,882 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2020-09-04 13:19:51,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-04 13:19:51,882 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2020-09-04 13:19:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-04 13:19:51,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:19:51,885 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 15, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:19:52,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-04 13:19:52,101 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:19:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:19:52,102 INFO L82 PathProgramCache]: Analyzing trace with hash -657441605, now seen corresponding path program 5 times [2020-09-04 13:19:52,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:19:52,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607411213] [2020-09-04 13:19:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:19:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:19:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:19:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 13:19:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-04 13:19:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 13:19:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 13:19:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:19:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 13:19:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 13:19:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:19:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:19:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 177 proven. 313 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2020-09-04 13:19:52,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607411213] [2020-09-04 13:19:52,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902453551] [2020-09-04 13:19:52,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:19:52,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-04 13:19:52,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:19:52,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2020-09-04 13:19:52,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:19:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 934 proven. 64 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2020-09-04 13:19:53,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:19:53,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 19 [2020-09-04 13:19:53,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153998423] [2020-09-04 13:19:53,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 13:19:53,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:19:53,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 13:19:53,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-09-04 13:19:53,165 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand 19 states. [2020-09-04 13:19:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:19:53,673 INFO L93 Difference]: Finished difference Result 180 states and 217 transitions. [2020-09-04 13:19:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 13:19:53,676 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2020-09-04 13:19:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:19:53,676 INFO L225 Difference]: With dead ends: 180 [2020-09-04 13:19:53,676 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:19:53,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2020-09-04 13:19:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:19:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:19:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:19:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:19:53,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 258 [2020-09-04 13:19:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:19:53,679 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:19:53,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 13:19:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:19:53,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:19:53,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-09-04 13:19:53,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:19:55,642 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 7 [2020-09-04 13:19:55,782 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 1 [2020-09-04 13:19:56,220 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 29 [2020-09-04 13:19:56,882 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 33 [2020-09-04 13:19:56,887 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:19:56,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:19:56,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:19:56,888 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:19:56,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:19:56,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:19:56,888 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-04 13:19:56,889 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-09-04 13:19:56,889 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-09-04 13:19:56,889 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-09-04 13:19:56,889 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-04 13:19:56,889 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-04 13:19:56,889 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 6 main_~x~0) (<= main_~x~0 6)) [2020-09-04 13:19:56,890 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-04 13:19:56,890 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-09-04 13:19:56,890 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-09-04 13:19:56,890 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2020-09-04 13:19:56,890 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-04 13:19:56,890 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse1 (<= |fibo2_#in~n| 4)) (.cse0 (= fibo2_~n |fibo2_#in~n|))) (and (or (and .cse0 (<= 6 |fibo2_#in~n|)) .cse1 (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3))) (or (not .cse1) (and (<= fibo2_~n 3) .cse0)) (or (and (<= |fibo2_#t~ret2| 1) (<= 1 |fibo2_#t~ret2|)) (and .cse0 (<= 5 |fibo2_#in~n|))) (<= 2 |fibo2_#in~n|))) [2020-09-04 13:19:56,891 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-09-04 13:19:56,891 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-04 13:19:56,891 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-09-04 13:19:56,891 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-09-04 13:19:56,891 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-09-04 13:19:56,891 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-09-04 13:19:56,892 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (or (<= |fibo1_#in~n| 2) (not (<= |fibo1_#in~n| 3))) (<= 2 |fibo1_#in~n|) (= fibo1_~n |fibo1_#in~n|)) [2020-09-04 13:19:56,892 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-04 13:19:56,892 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (or (<= |fibo1_#in~n| 5) (<= 7 |fibo1_#in~n|) (and (<= 5 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 5))) (or (and (<= |fibo1_#t~ret0| 1) (<= 1 |fibo1_#t~ret0|)) (<= 4 |fibo1_#in~n|)) (or (and (<= |fibo1_#in~n| 3) (<= 3 |fibo1_#in~n|)) (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2)) (<= 5 fibo1_~n) (and (<= |fibo1_#in~n| 2) (<= 2 |fibo1_#in~n|)))) [2020-09-04 13:19:56,892 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-09-04 13:19:56,892 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-09-04 13:19:56,893 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-04 13:19:56,893 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-09-04 13:19:56,893 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-09-04 13:19:56,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:19:56 BoogieIcfgContainer [2020-09-04 13:19:56,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:19:56,903 INFO L168 Benchmark]: Toolchain (without parser) took 22998.13 ms. Allocated memory was 140.5 MB in the beginning and 525.3 MB in the end (delta: 384.8 MB). Free memory was 103.6 MB in the beginning and 133.8 MB in the end (delta: -30.2 MB). Peak memory consumption was 354.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:19:56,903 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-04 13:19:56,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.96 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:19:56,905 INFO L168 Benchmark]: Boogie Preprocessor took 129.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 181.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:19:56,905 INFO L168 Benchmark]: RCFGBuilder took 320.49 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 168.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:19:56,906 INFO L168 Benchmark]: TraceAbstraction took 22210.64 ms. Allocated memory was 203.4 MB in the beginning and 525.3 MB in the end (delta: 321.9 MB). Free memory was 167.6 MB in the beginning and 133.8 MB in the end (delta: 33.8 MB). Peak memory consumption was 355.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:19:56,909 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.96 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 93.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 181.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 320.49 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 168.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22210.64 ms. Allocated memory was 203.4 MB in the beginning and 525.3 MB in the end (delta: 321.9 MB). Free memory was 167.6 MB in the beginning and 133.8 MB in the end (delta: 33.8 MB). Peak memory consumption was 355.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.0s, OverallIterations: 14, TraceHistogramMax: 21, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 471 SDtfs, 648 SDslu, 4444 SDs, 0 SdLazy, 4802 SolverSat, 637 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2236 GetRequests, 1922 SyntacticMatches, 13 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 137 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 515 PreInvPairs, 756 NumberOfFragments, 139 HoareAnnotationTreeSize, 515 FomulaSimplifications, 6194 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 11 FomulaSimplificationsInter, 8715 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 2991 NumberOfCodeBlocks, 2698 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2965 ConstructedInterpolants, 0 QuantifiedInterpolants, 936391 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2653 ConjunctsInSsa, 209 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 11461/14184 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...